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目的研究某非铅污染地区人群中血铅与发铅总体平均水平及两者的相关性。方法以某非铅污染区域中9个自然村270名健康人群为研究对象,用石墨炉原子吸收光谱法测定其血铅和发铅水平。结果非铅污染区域人群血铅、发铅水平中位数(M)分别为0.067μmol/L、3.6μg/g,男性血铅水平高于女性(M分别为0.088、0.050μmol/L,P<0.001),女性发铅水平高于男性(M分别为4.0、3.4μg/g,P<0.05);人群血铅、发铅水平总体均数的95%可信区间分别为(5.5,7.8)、(3.3,4.1),男性的为(7.3,10.3)、(2.8,4.0),女性的为(2.4,6.0)、(3.4,4.7)。血铅水平与发铅水平的spearman等级相关系数为-0.043。结论非铅污染环境下人群的血铅和发铅总体平均水平都较低,血铅水平与发铅水平无相关性。
Objective To study the correlation between the overall level of blood lead and lead in a non-lead polluted area and their relationship. Methods A total of 270 healthy people from 9 villages in a non-lead-contaminated area were selected as the research objects. The blood lead and lead levels were determined by graphite furnace atomic absorption spectrometry. Results The median level of blood lead and lead in non-lead polluted area were 0.067μmol / L and 3.6μg / g, respectively. The level of blood lead in male was higher than that in female (M = 0.088,0.050μmol / L, P < 0.001). The level of lead in women was higher than that in men (M = 4.0 and 3.4 μg / g, respectively, P <0.05). The 95% confidence intervals of total lead and lead levels were (5.5, 7.8) (3.3,4.1), men (7.3,10.3), (2.8,4.0), women (2.4,6.0), (3.4,4.7). The spearman rank correlation coefficient of blood lead to lead was -0.043. Conclusion The population of lead and lead in the non-lead polluted environment are generally low, and there is no correlation between lead levels and lead levels.